cm=null;
hide_delay=500;
tstat=0;

isNS4 = (document.layers) ? true : false;
isIE4 = (document.all && !document.getElementById) ? true : false;
isIE5 = (document.all && document.getElementById) ? true : false;
isNS6 = (!document.all && document.getElementById) ? true : false;

function switchDiv(objElement,bolVisible){
if(isNS4||isIE4){
     if(!bolVisible) {
       objElement.visibility ="hidden"
     } else {
       objElement.visibility ="visible"
     }     
 } else if (isIE5 || isNS6) {
      if(!bolVisible){
         objElement.style.display = "none";
         
      } else {
        objElement.style.display = "";
        
        }

      }

return 1;
}

function getPos(el,sProp) {
	var iPos = 0;
	while (el!=null) {
		iPos+=el["offset" + sProp]
		el = el.offsetParent
	}
	return iPos

}

function getelementbyid(myid) {
   if (isNS4){
        objElement = document.layers[myid];
     }else if (isIE4) {
        objElement = document.all[myid];
     }else if (isIE5 || isNS6) {
             objElement = document.getElementById(myid);
     }
return(objElement);
}

function show(el,m,tab) {

 if (cm!=null) {
 switchDiv(cm,false);
 }

 if (m!=null) {
 m=getelementbyid(m);
 m.style.left = (getPos(getelementbyid(tab),"Left")+20)+"px";
 m.style.top =  getPos(el,"Top")+el.offsetHeight+"px";
 switchDiv(m,true);
 cm=m;
 }

}

function hidemenu() {

timer1=setTimeout("show(null,null)",hide_delay);

tstat=1;

return 1;
}

function cancelhide() {
 if (tstat==1) {
 clearTimeout(timer1);
 tstat=0;
 }
return 1;
}